Truck



May ll, 1937. c. L. EASTBURG TRUCK Filed March 2, 1936 2 Sheets-Sheet lMay 11, 1937. c. 1 EASTBURG 2,079,845

TRUCK Filed March 2, 1936 2 Sheets-Sheet 2 f-ZO 4 g v /7 /6 /7 lPatented May 11, 1937 UNITED STATES PATENT OFFICE Application March 2,1936, Serial No. 66,625

equipped with shoes between which `the axle boxes are held horizontallybut are permitted to slide vertically. The invention has for its'principal objects to provide the pedestal shoes with cheap, readilyreplaceable plates that will take most of the wear caused by slidingfriction between the contacting Surfaces of the said plates and the axlebox, to provide for taking up looseness or play due to wear of saidcontacting surfaces without changing the tram of the axle, and todispense with the use of welds or other fasteners for holding the wearplates in place. The invention consists in the truck pedestal shoe andin the construction, combinations and arrangements of parts hereinafterdescribed and claimed.

In the accompanying drawings, which form part of this specification andwherein like symbols refer to like parts wherever they occur,

Fig. 1 is a vertical section through a locomotive truck constructionembodying my invention, the section being taken through the truckpedestal and the drive box and roller bearing axle constructionassociated therewith,

Fig. 2 is a vertical section on the line 2--2 in Fig. 1, the truck sideframe being shown in side elevation,

Fig. 3 is a horizontal section on the line 3-3 of Fig. 1,

Fig. 4 is a side elevation of one of the pedestal shoes, showing thewear plate receiving recess in the pedestal box opposing face of theshoe,

Fig. 5 is an edge View of said shoe,

Fig. 6 is a horizontal cross-section through said shoe on the line 6-6of Fig. 4,

Fig. 'l is a perspective view of one of the wear plates; and

Fig. 8 is a perspective view of one of the wear plate adjusting shims.

In the accompanying drawings, my invention is shown in connection with alocomotive truck comprising a side frame .I provided with a pedestal 2,a removable tie bar 3 for closing the jaw of the pedestal,channel-shaped shoes 4 that straddle the legs of the pedestal, and asuitable drive or axle box 5 mounted in the pedestal jaw between saidshoes. The pedestal shown in the drawings is of the type wherein onelegis provided with an inclined surface adapted to cooperate with awedge 6 for taking up wear between the axle box and the guide shoetherefor. In the present construction; however, this wedge is welded orotherwise rigidly secured to the pedestal leg and is used onlyto providesaid leg with a vertical guide shoe opposing face. The drive or pedestalbox 5 is provided at its inner end with outstanding vertical sideflanges 5a that are disposed opposite the inner side flanges of theguider shoes 4 in position to receive the side thrust of the truck. Thisbox is mounted on the adjacent end of a tubular load supporting housing'I that surrounds a live axle 8 that extends beyond the end of saidhousing and has a wheel 9 xed thereto outside of the truck side frame I.The drive box has a pair of lugs or ears I0 at the top thereof thatextend above the side frame I on opposite sides thereof and are adaptedto support the usual mechanism (not shown) for equalizing the weight onthe truck axles.

interposed between the wheel 9 and the axle housing I is a taper rollerbearing comprising a cone II mounted on the axle housing between thewheel and the pedestal box 5, a cup I2 mounted in a recess providedtherefor in the inner face of the wheel center, and conical bearingrollers 2I interposed between said cone and said cup. The space betweenthe cup and cone of the bearing is closed by an annular closure plate I3that surrounds the large end of the cone and is removably secured at itsouter margin to the inner face of the wheel center. Relative endwisemovement of the pedestal box and axle housing is prevented by a ring I4mounted on the housing between the bearing cone II and the outer end ofsaid box and a ring I5 mounted on said housing between the inner end ofsaid box and an eX- terior thrust rib I6 formed on said housing.

According to the present invention, the pedestal box opposing face ofeach guide shoe 4 is provided with a rectangular recess Il and groovesor channels I8 that extend from the `vertical side edges of said surfaceand open into said -recess through the side Walls thereof at their upperand lower ends. Seated in said recess is a rectangular wear plate I9adapted to contact with the opposing side face of the pedestal box, saidplate being made of bronze or other soft metal so as to allow most ofthe Wear to occur thereon. The wear plate is made thick enough toproject beyond the pedestal box opposing face of the shoe and extendsabove and below the face of the pedestal box in contact therewith so asto prevent wearing of shoulders in the shoe above and below the platereceiving recess therein. The plates are adjusted to compensate for wearthereof by means of rectangular shiins 2U that seat within the platereceiving recess in the shoes back of said plate.

By the arrangement described, most of the CIK wear due to the slidingfriction between the pedestal box and the wear plates is taken by thelatter; and the play or looseness resulting from such wear is taken upby placing shims of proper thickness in the bottoms of the wear platerecesses in the pedestal shoes. These shims may be distributed onopposite sides of the drive box so that the proper tram of the engineismaintained. Removal of the pedestal tie bar permits the guide shoes todrop from the pedestal jaw. The recesses serve to hold the wear platesand shims in proper position in the shoe without the use of welds orseparate fastening members. The extensions at thecorners of the recessessimplify the operation of machining the recesses; and they also enable atool to be inserted back of the wear plates or shims to pry the samefrom the recesses.

Reference is hereby made to my co-pending application Serial No. 63,854led February 14, 1936, for subject matter shown but not claimed herein.

What I claim is:

1. A truck comprising a pedestal, a box locatedin the jaw of saidpedestal, guide shoes interposed between the opposing sides of saidpedestal and said box, the box opposing sides of said shoes beingprovided with recesses, and wear plates seated in said recesses andadapted to engage the adjacent sides of said box, the box opposing sidesof said shoes having openings therein extending from one edge of saidshoes thro-ugh the adjacent walls of the recess therein.

2. A truck comprising a pedestal, a box located in the jaw of saidpedestal, guide shoes interposed between the opposing sides of saidpedestal and said box, the box opposing sides of said shoes beingprovided with recesses, wear plates seated in said recesses and adaptedto engage the adjacent sides of said box, the box 0p- I engagement withthe adjacent sides of said box,

the upper and lower end portions of said recesses extending clear acrossthe box opposing sides of said shoes.

4. A truck comprising a pedestal, a box located in the jaw of saidpedestal, guide shoes interposed between the opposing side faces of saidpedestal and said box, the box opposing sides of said shoes beingprovided with recesses, wear f plates seated in the respective recessesin engagement with the adjacent sides of said box, the upper and lowerend portions of said recesses extending clear across the box opposingsides of said shoes, and shims seated in the bottoms of said recessesback of said wear plates.

5. A pedestal shoe having a recess in its pedestal box opposing side anda wear plate seated in said recess, and the upper and lower portions ofsaid recess extending clear across said side of said shoe.

6. A pedestal shoe having a rectangular recess in its pedestal boxopposing side, a rectangular wear plate seated in said recess, saidrecess being extended at the corner portions thereof to the side edgesof said shoe, and rectangular adjusting shims seated in said recess backof said wear plates.

CLIFFORD L. EAST'BURG.

